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PreprintCC BY 4.0arXiv

Pressure-induced electronic and structural evolution of EuIrGe3

  • N. S. Dhami
  • V. Baledent
  • I. Batistic
  • C. M. N. Kumar
  • D. Kaczorowski
  • L. Nataf
  • J. M. Ablett
  • J. -P. Rueff
  • J. P. Itie
  • P. Fertey
  • S. R. Shieh
  • P. Popcevic
1 more authors
  • Y. Utsumi Boucher
Open at sourcePDFDOICite

Abstract

We investigated the pressure-induced evolution of the electronic and crystal structure of the noncentrosymmetric BaNiSn3-type antiferromagnet EuIrGe3 using x-ray absorption spectroscopy, synchrotron x-ray diffraction complemented by density functional theory calculations, and electrical resistivity measurements. The Eu L3-edge spectra reveal a continuous increase in the mean Eu valence under compression, accompanied by modifications of the Ge and Ir electronic states. High- pressure x-ray diffraction shows anisotropic lattice compression in the tetragonal (I4mm) phase and provides evidence for a structural phase transition above 38 GPa. The experimentally deter- mined lattice and equation-of-state parameters are in good agreement with the DFT calculations. Electrical resistivity measurements reveal a monotonic increase in the antiferromagnetic ordering temperatures up to 18 GPa, indicating that the antiferromagnetic ground state remains robust despite the increasing contribution of the nonmagnetic Eu3+ configuration to the intermediate va- lence state. These results demonstrate that EuIrGe3 exhibits a pressure response distinct from EuCoGe3 and EuRhGe3, highlighting the important role of the transition metal d-electron states in the pressure-induced electronic and structural evolution of the EuT Ge3 family

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Cite

BibTeXRIS
BibTeX
@misc{dhami2026pressureinduced,
  title = {{Pressure-induced electronic and structural evolution of EuIrGe3}},
  author = {N. S. Dhami and V. Baledent and I. Batistic and C. M. N. Kumar and D. Kaczorowski and L. Nataf and J. M. Ablett and J. -P. Rueff and J. P. Itie and P. Fertey and S. R. Shieh and P. Popcevic and Y. Utsumi Boucher},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.20376},
  eprint = {2609.20376},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.20376},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Pressure-induced electronic and structural evolution of EuIrGe3
AU  - N. S. Dhami
AU  - V. Baledent
AU  - I. Batistic
AU  - C. M. N. Kumar
AU  - D. Kaczorowski
AU  - L. Nataf
AU  - J. M. Ablett
AU  - J. -P. Rueff
AU  - J. P. Itie
AU  - P. Fertey
AU  - S. R. Shieh
AU  - P. Popcevic
AU  - Y. Utsumi Boucher
PY  - 2026
DA  - 2026/09/17
PB  - arXiv
DO  - 10.48550/arxiv.2609.20376
UR  - https://arxiv.org/abs/2609.20376
AB  - We investigated the pressure-induced evolution of the electronic and crystal structure of the noncentrosymmetric BaNiSn3-type antiferromagnet EuIrGe3 using x-ray absorption spectroscopy, synchrotron x-ray diffraction complemented by density functional theory calculations, and electrical resistivity measurements. The Eu L3-edge spectra reveal a continuous increase in the mean Eu valence under compression, accompanied by modifications of the Ge and Ir electronic states. High- pressure x-ray diffraction shows anisotropic lattice compression in the tetragonal (I4mm) phase and provides evidence for a structural phase transition above 38 GPa. The experimentally deter- mined lattice and equation-of-state parameters are in good agreement with the DFT calculations. Electrical resistivity measurements reveal a monotonic increase in the antiferromagnetic ordering temperatures up to 18 GPa, indicating that the antiferromagnetic ground state remains robust despite the increasing contribution of the nonmagnetic Eu3+ configuration to the intermediate va- lence state. These results demonstrate that EuIrGe3 exhibits a pressure response distinct from EuCoGe3 and EuRhGe3, highlighting the important role of the transition metal d-electron states in the pressure-induced electronic and structural evolution of the EuT Ge3 family
ER  -